3371 results about "Antibiosis" patented technology

A diagnostic microbiological testing system and method for microorganism identification (ID) and antimicrobial susceptibility determinations (AST). The system includes multiple-well test panels capable of performing ID and AST testing on the same test panel. Each test panel is inoculated with reagents, broth-suspended organisms, and placed into the instrument system. The instrument system includes a rotating carousel for incubation and indexing, multiple light sources each emitting different wavelength light, precision calorimetric and fluorometric detection, barcode test panel tracking and a control processor for making determinations based on measured test data. One light source includes a plurality of LEDs arranged in a linear array. Each of the LEDs' junction currents are controllable to produce a predetermined illumination profile.

An isolated Bacillus amyloliquefaciens Ba-BPD1 having an Accession No. of DSM 21836 is provided. This novel strain has unique 16S ribosomal RNA sequenced as SEQ ID NO:1 and produces amylase, protease, cellulase and lipase, fibrinolytic enzyme to show their biodegradation capacities. Further, B. amyloliquefaciens Ba-BPD1 produces the antibiotic substances, such as iturin, fengycin and surfactin, and has antimicrobial capacity for inhibiting the fungal or bacterial growth. In conclusion, the novel strain of Bacillus amyloliquefaciens Ba-BPD1 and its products can be applied in agriculture, wastewater treatment, food industry and chemical industry.

The present invention demonstrated the potential use of Lactobacillus johnsonii D115 as a probiotic, as a prophylactic agent or as a surface treatment of materials against human and animal pathogens such as Brachyspira pilosicoli, Brachyspira hyodysenteriae, Shigella sonnei, Vibrio cholera, Vibrio parahaemolyticus, Campylobacter jejuni, Streptococcus pneumoniae, Enterococcus faecalis, Enterococcus faecium, Clostridium perfringens, Yersinia enterocolitica, Escherichia coli, Klebbsiella pneumoniae, Staphylococcus aureus, Salmonella spp., Bacillus cereus, Aspergillus niger and Fusarium chlamydosporum. The proteineous antimicrobial compound was partially characterized and found to be heat tolerant up to 121° C. for 15 min, and acid tolerant up to pH1 for 30 min at 40° C. The compound is also stable to enzymatic digestion, being able to retain more than 60% antimicrobial activity when treated with pepsin and trypsin.

The invention relates to a method for preparing health-benefiting fermented soybean meal enriched in small peptides, gamma-aminobutyric acid (GABA), reducing sugar, lactobacillus plantarum and antimicrobial peptide. By utilizing strains of aspergillus oryzae, saccharomyces cerevisiae, bacillus subtilis and lactobacillus plantarum, the small peptides, free amino acids, reducing sugar, GABA and high viable count content in the lactobacillus plantarum in the health-benefiting fermented soybean meal are obtained through the two-stage solid state fermentation method, the small peptides account for 8.01-18 percent, the free amino acids has the content of 80-300mg / g, the reducing sugar reaches 20-80mg / g, the GABA reaches 0.317-0.5mg / g, the viable count content in the lactobacillus plantarum is 2-6.5*1010cfu / g, the antibacterial titer of antimicrobial peptides is 2.0*103-7.0*104 IU / g, and the yield of the health-benefiting fermented soybean meal is 82.03-90 percent. According to the process, the nutrient effect of the soybean meal can be improved, the prepared fermented soybean meal has the antibacterial effect, partial antibiotics can be replaced, the fermented soybean meal is conveniently preserved and saved, the process is simple and feasible, and the fermented soybean meal is green and environment-friendly and has application significance and wide prospect in the feed industry and breeding industry.

The present invention discloses one kind of ultraviolet ray cured nanometer antibiotic woodenware lacquer and its preparation process. The ultraviolet ray cured nanometer antibiotic woodenware lacquer includes epoxy acrylate, polyurethane acrylate, diluent, nanometer inorganic antiseptic, nanometer inorganic stuffing and photoinitiator. The preparation process includes adding nanometer inorganic antiseptic and nanometer inorganic stuffing into the diluent, stirring to disperse homogeneously, adding epoxy acrylate, polyurethane acrylate and photoinitiator and mixing homogeneously. The woodenware lacquer with nanometer inorganic antiseptic can inhibit the growth and propagation of bacteria and microbes to produce long term antibiotic effect.

The invention discloses finishing liquor for realizing antibiosis of fabrics and a preparation method of the finishing liquor. The finishing liquor consists of raw materials including, by weight, 0.1 part of chitosan, 0.5 part of DC-5700, 0.2 part of nanometer silver antibacterial agent, 1 part of 3-chloropropylmethyldimethoxysilanes, 0.3 part of 2, 4, 4'-trichlorine-2 hydroxy-diphenyl ether, 3 parts of PEG (polyethylene glycol)-40 hydrogentated castor oil, 0.3 part of water-soluble wool oil, 10 parts of ethanol and 84.6 parts of RO (reverse osmosis) water. Compared with other bacteriacide, the antibacterial agent has high safety and a good long-term sterilizing effect, and does not affect processability of materials and other application performances. The finishing liquor for the fabrics not only has an antibacterial effect, but also has a special effect of being capable of guaranteeing that finished fabrics can keep original softness. In addition, the finishing liquor for the fabrics is temperate, is not irritative, does not contain formaldehyde, is environment-friendly, and does not have any side effects when used for a long time.

The invention relates to a convenient preparation method for culturing ecological bacteria. The product comprises a composite microbial freeze-drying strain, a special culture medium, a flora coordination and growth promotion factor and the like. After the freeze-drying microbial strains and nutrients are mixed according to the weight ratio of 1:100-1:100000, finished products are obtained by sealing and encapsulating. When in use, the product is added with water with the quantity of 20 times, the mixture is stirred evenly, the environmental temperature is controlled between 15 DEG C and 40 DEG C, and the mixture is covered by a cover, sealed at a dry position and then can be fed after being naturally activated for 2-3 days. The added water is required to be drinking water and does not contain a disinfector, a bactericide, an antibiotic and a synthetic antibacterial agent, and the temperature of the water can not exceed 45 DEG C, warm water with the temperature of 25-37 DEG C is preferred; a used container must be washed and cleaned, is provided with a cover for sealing and can be recycled by disinfection after being used. At present, most of the active bacterium products sold in the market are packaged and delivered to the market after a microbial agent and the products are fermented in a factory, which is a sale-after-growth mode; the defects of unstable effect, unreasonable performance-price ratio and the like generally exist in the active bacterium products produced by this mode. The invention adopts a growth-after-sale mode and hands the production priority of a microbial preparation to a user, and the user can prepare and culture the required ecological bacteria under a simple condition by carrying out water addition, temperature control and natural fermentation on the product. The convenient bacteria do not contain chemical medicaments and toxin and are ecological and environment-friendly.

The present invention relates to a fiber product having the performances of antibiosis, odor elimination, heat dissipation and cooling. The present invention comprises woven fabric, knitted fabric, non woven fabric film or a combination body of the fabric and the film, and is made by weaving continuous filament fiber or short fiber having various different cross section shapes, sizes, colors, structures, etc. The fiber adopts sub-micron or nanometer powder with high heat diffusion coefficient and low heat conduction coefficient, and is added into thermoplastic plastic grains in a quantitative way after being decentralized with an interfacial agent. The thermoplastic plastic grains are fully mixed with the sub-micron or nanometer powder with the high heat diffusion coefficient and the low heat conduction coefficient by a mixing machine or a kneading machine or by utilizing the chemical synthesis method, and then are made into masterbatch with a granulating machine, finally the fiber product having the functions of antibiosis, odor elimination, heat dissipation and cooling can be made by using the melting, and the dry and the wet spinning technologies and through the pre-designed spinneret.

The invention relates to a water-soluble plant growth nutrient solution and a preparation method. In the plant growth nutrient solution, the content of small molecular weight water-soluble chitosan accounts for 8-120g / L, the sum of the content of nitrogen, phosphorus and potassium is larger than or equal to 60g / L, the sum of the content of medium trace elements accounts for 3-30g / L, the content of organic matter accounts for 30-200g / L, the content of plant growth regulator accounts for 0.01-5g / L, and the content of spread penetrating agents is larger than or equal to 0.2g / L; the small molecular weight water-soluble chitosan is obtained through the preparation steps that chitosan is firstly subjected to alkalization of strong base, then subjected to carboxyl chemical modification, degraded through strong oxidant after carboxyl chemical modification and finally neutralized through acid. The water-soluble plant growth nutrient solution integrates the effects of nutritional complement, growth promotion, antibiosis, virus resistance, stress tolerance and the like and has multiple functions and effects of improving soil, preventing hardening, increasing ground temperature, resisting to disease, being tolerant to stress, resisting to continuous cropping, supplementing nutrition rapidly, raising the yield and improving fruit quality and the like.

A vegetative additive for the mixed feed used to culture quatic animals is proportionally prepared from adhesive, allicin, and 8 Chinese-medicinal materials including dandelion herb, phellodendron bark, scutellaria root, liquorice root, etc. Its advantage is high effect to kill bacteria and virus and promote the development of immune organs.

The invention discloses a method for preparing nano silver particles by using plant extract for reduction, and application of the method. In the method, the extract of natural plants such as chrysanthemum, honeysuckle flower, or bud of Japanese pagoda tree which serves as a reducing agent reacts with Ag<+> in aqueous solution of silver nitrate to ensure that Ag<+> is reduced into elementary substance silver nano particles. The method is simple, reaction conditions are mild, additives except for silver nitrate are not needed, the plant extract which is low in cost and can be easily obtained is used as the reducing agent, and the method is environment-friendly; the nano silver particles obtained by the method have smaller diameters, and high dispersibility and stability in aqueous solution; and Chinese herbal medicine components which have the effects of antibiosis and antiphlogosis are added, and the method has the characteristics of disinfection and sterilization, bacteriostasis, safety, no toxicity or irritation and the like and can be directly applied to multiple kinds of dermatological and surgical bacterial infection or medical equipment and cosmetics.

The invention discloses multifunctional aromatic type element fiber fabric protective clothing. The multifunctional aromatic type element fiber fabric protective clothing comprises vitamin mineral substance nutrient element group, a free radical-scavenging anti-electromagnetic wave energy-accumulated heat-insulating material, natural antibiosis mite-proof traditional Chinese medicine fluid extract aroma nano microcapsule, and cotton, sesame, silk, wool, polypropylene fiber, nylon, acrylic fiber and a terylene viscose fiber spinning solution. The multifunctional aromatic type element fiber fabric protective clothing can entirely supplement and regulate the element balance of a human body, as well as the vitamin balance, release trace element negative ions, purify air, resist heavy metal elements and air, powerfully scavenge free radicals, enhance the immunity of the human body, and prevent electromagnetic wave pollution, is energy-accumulated, cold-proof and heat-insulating, as well as antimicrobial and mite-proof, can effectively prevent the infection of various pathogenic bacteria, influenza and skin pruritus, is anti-cancer, and resists hypertension, hyperlipidemia, hyperglycemia, cerebral thrombosis and the like, thus building the human body, and enabling the human body to emit natural and pleasant aroma.

The invention relates to an acne removal composition based on natural plant raw materials and an application thereof for treating and preventing human acne and acne marks. The acne removal composition is used for compensating the defect that the existing products for treating acne are deficient in efficiency and / or comprehensive quality. Aiming at key factors of inducing the generation and development of acne and skin problems induced by the acne, the invention provides a safe and effective acne removal composition having 2-6 functions and a preparation technology therefore for comprehensively treating the acne. The two functions contain antibiosis and anti-inflammation; and the six functions contain antibiosis, anti-inflammation, balancing sebum secretion, preventing abnormal keratinization and congestion of pilosebaceous duct, repairing injured skin and removing acne marks. The product provided by the invention has strong market competitiveness on safety, function, comprehensive quality and cost performance. The acne removal composition provided by the invention can be used for developing drugs, cosmetics, personal care products and the like for treating and preventing human acne and acne marks.

The invention discloses a nanosilver / graphene oxide composite dispersion fluid, and a preparation method and application thereof. The dispersion fluid comprises a liquid medium and a nanosilver / graphene oxide composite, wherein the nanosilver / graphene oxide composite is uniformly dispersed in the liquid medium; the concentration of the dispersion fluid is 0.01 to 10 mg / ml; and nanosilver particles in the nanosilver / graphene oxide composite are uniformly dispersed and adhered onto the surface of graphene oxide, and the sizes of the nanosilver particles are in a range of 5 to 50 nm. According to the invention, a hypergravity rotating packed bed or a micro-channel reactor is used as reaction equipment; no reducing agent is needed in the process of preparation; and the prepared nanosilver / graphene oxide composite dispersion fluid is transparent and stable and is free of precipitates after standing for six months. Compared with the prior art, the method provided by the invention is rapid, simple, efficient and applicable to large-scale industrial production. The nanosilver / graphene oxide composite dispersion fluid provided by the invention has wide application prospects in fields like catalysis, energy storage, electronics, antibiosis and surface Raman enhancement.

The invention discloses a traditional Chinese medicine vegetable feed additive containing honeysuckle and a preparation method thereof. The formula of the traditional Chinese medicine vegetable feed additive includes honeysuckle, forsythia, herba houttuyniae, mulberry leaves, radix scutellariae, radix isatidis, liquorice, haws, dried tangerine peels, pine needles, argy wormwood leaves, plantain and the like. The honeysuckle, the forsythia, the herba houttuyniae and the mulberry leaves have the efficacy of clearing heat, removing toxicity, resisting bacteria and diminishing inflammation; the haws and the dried tangerine peels have the efficacy of invigorating the stomach and improving digestion; the pine needles have the efficacy of dispelling wind, eliminating dampness, killing parasites,relieving itching, nourishing the heart and soothing the nerves; the argy wormwood leaves have the effects of reducing dampness, killing parasites and dispelling cold to relieve pain; and the plantain can reduce fever, cause diuresis, eliminate phlegm, relieve a cough, drain dampness and check diarrhea. After the formula is partially extracted with water or alcohol or partially ground, the formula and spray-dried extract powder are then mixed and produced into granules, which are dried. When in use, the traditional Chinese medicine vegetable feed additive is directly added into feed accordingto a certain proportion, consequently, the immunity of animals can be enhanced, various cold and gastrointestinal diseases can be prevented and treated, the quality of the feed is improved, the appetite of animals can be increased, the feed utilization rate can be increased, and the quality of livestock and poultry products can be increased.

The invention discloses a method for preparing an antipollution chitosan-nonwoven fabric composite porous filter membrane and belongs to the technical field of microfilter and ultrafilter composite membranes. The method is characterized in that the method adopts nonwoven fabric with nominal aperture of between 0.1 and 10 microns as a base membrane; a crosslinking agent is adopted to carry out pretreatment on the base membrane; 0.1 to 10 mass percent amylose is dissolved in an acetic acid solution; the crosslinking agent and a hole formation agent are added into the acetic acid solution; after the crosslinking reaction, a casting film liquid is obtained; at negative pressure, the casting film liquid is evenly coated on the surface and pores of the porous base membrane; and after treatment by a sodium hydroxide solution and a hot water bath, the antipollution chitosan-nonwoven fabric composite porous filter membrane is formed. The method has the advantages that the prepared composite membrane has good mechanical performance and chemical stability; and the surface of the membrane is levelled and smooth. The composite membrane has dual functions of hydrophile and antibiosis, can lighten adsorption of pollutants on the surface of the membrane, inhibit the growth and reproduction of thalli on the surface of the membrane, and keep the penetrating performance of the membrane and is widely applied to the water treatment process of various fields.

The invention relates to a method of industrial and artificial breeding of Epinephelus, which is applicable to the breeding of Epinephelus malabaricus and E.coioides. The method comprises the following steps: (1) treating a nursery pond and water; (2) preparing before breeding; (3) putting larval fishes of Epinephelus or germ cells; (4) controlling the quality of the breeding water body; and (5) feeding baits. The method is applied to conduct the industrial and artificial breeding, so that the water quality of the breeding is stable, the output for the unit water body breeding is high, the bred sizes of advanced fries are uniform, no antibacterial drugs are used, no special breeding is conducted to unicellular alga, no bottom-attaching happens in the process of breeding, and the operation is simple.

The invention discloses a safe, environment-friendly and stable preparation method of a nanometer sliver colloid solution, comprising the following steps: mixing the alkylated cyclodextrin aqueous solution and the silver ammonia solution according to the volume ratio of 1:100-1:10, wherein the mass percent of the alkylated cyclodextrin aqueous solution is 0.1-10%, and the mass molar concentration of the silver ammonia solution is 0.01-1.0mol / L; and stirring for 1-120min at 10-100 DEG C to obtain the nanometer sliver colloid solution of which the average grain diameter is 1-100nm. The method of the invention has the advantages of simple preparation process and can ensure the application safety of the nanometer sliver colloid solution, and the prepared nanometer sliver colloid solution has the characteristics of good stability, small grain diameter of nanometer sliver, less dosage and high antibiosis efficiency in the function materials of the nanometer sliver.

The invention relates to a method for preparing plant extract from Chinese traditional medicine honeysuckle (Lonicera japonica Thunb.) or honeysuckle or other plants of same congenic strains, the honeysuckle extract and medical compound containing said extract. The effective component of said compound is secologanic acid and its derivants. The method comprises following steps: extracting with water or alcohol, depositing extract, refining through chromatogram, purifying with chromatogram if needed, getting extract with secologanic acid and its derivants concentration being more than 50%, or about 70% if better. The honeysuckle extract is characterized by analgesic, analgesic, analgesic, anti-biotic and antiviral function, and can be used to treat analgesic, pain, infectious disease, especially to treat atypical pneumonia, viral influenza and AIDS.

The invention relates to a fabric multifunctional foaming material with the functions of magnetism, far infrared, anion, traditional Chinese medicine, aroma, antibiosis, adsorption and the like. The invention mainly solves the technical problems that the conventional fabric products have single function, have side effect on a human body and the like. The fabric multifunctional foaming material is prepared by mixing NdFeB powder microcapsules, nano silver powder microcapsules, tourmaline powder microcapsules, Chinese medicinal powder microcapsules, plant essential oil microcapsules, a foaming base material, a wetting agent and a diluent. The preparation method comprises the step of uniformly mixing the raw materials according to a certain proportion. The fabric multifunctional foaming material can be applied to slurry for screen printing of fabrics. The foaming material is applied to the fabrics, so the fabrics have the functions of magnetism, far infrared, anion, traditional Chinese medicine, aroma, antibiosis, adsorption and the like, have no harm to a human body and improve the quality of life of people.

The invention discloses a production technology for an antibiosis moisture exhausting sock. The production technology includes the steps of firstly, preparing materials, wherein fiber used for knitting a fiber layer of the sock body is prepared through a yarn covering or yarn doubling method, knitted base yarn is manufactured, and components of the materials of the base yarn include 20% to 65% of natural bamboo fiber; secondly, dyeing the yarn through a sock dyeing machine; thirdly, conducting softening, wherein softening is conducted on the base yarn through softeners; fourthly, conducting knitting, wherein the base yarn is knitted into the sock body through a knitting machine, the base yarn of the natural bamboo fiber is knitted to form the sock body, and the sock body is sewn; fifthly, conducting disinfection, wherein antibiosis process treatment is conducted on the sock body through a sanitizer WS-8810 and an anti-bacterium agent; sixthly, conducting post processing, wherein the processed sock body is shaped to obtain a finished sock body. The sock has the antibiosis function and the sweat discharging function at the same time, is good in breathability, comfortable and soft and can still keep the extremely-strong antibiosis performance after being repeatedly washed.

The invention relates to preparation of nanometer graphene oxide modified cotton fibers and an antibiosis product thereof, wherein the preparation comprises that: (1) graphite oxide is prepared; (2) the graphite oxide and a cross-linking agent are put in a beaker, deionized water is added, and ultrasonic processing is performed to obtain a uniformly dispersed graphene oxide solution; and (3) preparation of an antibiosis product adopts a two dipping and two rolling technology. The nanometer graphene oxide modified cotton fibers and the antibiosis product thereof have characteristics of simple preparation, low cost, good security, broad-spectrum and high efficiency antibacterial property, excellent launderability and excellent permeability.

The present invention discloses a chitosan nanoparticle suspension preparation method and application thereof. The chitosan nanoparticle suspension preparation method comprises the following steps of: (1) dissolving a chitosan into a glacial acetic acid aqueous solution to prepare a chitosan aqueous acetic acid; (2) under stirring, adding a tripolyphosphate sodium aqueous solution dropwise to obtain a coarse chitosan nano suspension; and (3) after filtering the coarse chitosan nano suspension, processing homogeneously the filtered suspension with high pressure to obtain a nano chitosan suspension with a uniform particle size distribution. The invention has the advantages of simple operation, good scale-up preparation reproducibility, and low production cost, and is applicable to industrial production. The prepared nanoparticles are of a uniform morphology, small in particle diameter and applicable to preparing products with functions of antibiosis, hemostasis and promoting tissue repair.

The invention relates to a chitosan / polyvinyl alcohol (PVA) porous composite material. The material is prepared from the following raw materials in percentage by weight: 1-5% of chitosan, 10-30% of PVA, 1-5% of acetic acid, 5-10% of inorganic acid, 5-10% of cross-linking agent, 6-10% of foaming agent, 0.5-2% of antibacterial agent, 1-5% of softening agent and the like. The preparation method of the material comprises the following steps: stirring for fully dissolving the PVA; pouring the dissolved PVA into the dissolved chitosan, adding the inorganic acid, the cross-linking agent, the foaming agent, the softening agent and the antibacterial agent to the obtained mixed solution, heating the solution to 90-100 DEG C, and pouring the solution into a die for continuously reacting at the temperature of 60-100 DEG C for 6-15 hours; and finally cooling and washing the obtained product with distilled water. The obtained material has the characteristics of good biocompatibility, excellent antibacterial effect, strong liquid absorption capability, biodegradability, good adhesion to skin and the like, and has functions of rapid hemostasis, antibiosis, anti-inflammation and acceleration of wound healing, thus the material is suitable for serving as various wound dressings.

The invention discloses a high molecular weight guanidine salt and polybasic amine antibiosis type polymer and a preparation method and the application thereof. The polymer comprises a repeated unit structure as right, wherein, X1 and X2 are the same or different polybasic amines; Y is Cl<->, NO3<->, HCO3<-> or H2PO4<->; Z is polyprotic acid, polyprotic acid anhydride or multielement ester. When in preparation, the mixture of polynary amine and guanidine salt is heated for reaction, and then polyprotic acid, polyprotic acid anhydride or multielement ester is added, and the temperature is continuously raised for reaction. The invention solves the problem that the polybasic amine and the guanidine salt react through a main body, thereby being difficulty to obtain a higher molecular weight polymer. In lower reaction temperature and shorter reaction time, by the chain expanding reaction to a polynary amine and guanidine salt prepolymer by the polyfunctionality substance, the high molecular weight guanidine salt and polybasic amine antibiosis polymer is formed. The polymer can be used as the anti fungus agent of the fiber product, the paper product, the non-weaving product and the tissue, etc.

The invention relates to nano-silver solution with the nano-silver concentration between 250 and 3,200ppm and the average sliver grain diameter between 2 and 12nm. The nano-silver solution also comprises medicine accessory level dispersing agents and medicine level reducing agents. The preparation method mainly comprises the following steps of: dissolving the medicine accessory level dispersing agents into deionized water to prepare dispersing agent solution; adding and dissolving silver nitrate to obtain solution I; taking and adding the medicine accessory level reducing agent solution into the solution I; mixing the medicine accessory level reducing agent solution with the solution I to obtain solution II; placing the solution II under an ultraviolet lamp to be irradiated; and stirring the solution II for reaction to obtain the nano-silver solution. The nano-silver solution has stronger antibiosis performance. When the nano-silver solution is diluted to 10ppm to detect and evaluate the antibiosis effect on staphylococcus aureus, colibacillus and pseudomonas aeruginosa, the antibiosis efficiency reaches higher than 99.9 percent in two minutes. The preparation method has simple process, can avoid the use of various strong acid, strong base and strong reducing agents and has good medical safety.

The invention provides a new compound and a preparation method and application thereof. The structure of the compound provided by the invention is shown as a formula (1). Four-potential hydroxyl of glycosyl on benzyl hydroxyl of peptide framework six-potential amino acid of the compound serves as an axial bond and the compound is obtained by fermentation and has the collection number of China General Microbiological Culture Collection Center (CGMCC) No.3053. The compound provided by the invention has high antibiotic activity, so that the compound plays a very important role in developing a new antibacterial medicament.

The invention provides a wool fibre fabric sweat shirt (pants) with functions of powerful antibiosis, cancer prevention and life prolonging by utilizing nano silver, selenium and germanium, belonging to the technical field of healthy wool textile fibre fabrics clothes production. In the real life of people, various germs, viruses and fungi are contacted unavoidably, in particular, various bird flu and HIV discovered currently seriously threaten the health of human beings. Nano silver can kill 650 types of pathogens; far-infrared rays are almost absorbed by the skin of human body completely to lead the surface temperature of the skin to rise; heat energy impels the blood vessel to expand, improves blood circulation and microcirculation; the electromagnetic wave is colorless, tasteless and formless, can easily cause pollution to human body and is a potential killer. The anions in the air are vitamins and longevity elements in the air and are beneficial to human body; selenium and germanium are important elements to prevent and resist cancer; and the mixture of bee series can comprehensively supplement a plurality of nutrient active components required by human body. After nano treatment, the efficacy of anti-aging traditional Chinese medicine can be improved to 100 times.

The invention relates to a method of improving the bacterinertness of a silk fibroin solution. Silk fibroin material has favorable prospects when applied in biomedicine aspect, and thus the search of a method of improving the bacterinertness of silk material is meaningful. The invention comprises a silk fibroin solution preparing working procedure which adopts silk fibroin to prepare the silk fibroin solution and is characterized by also comprising a nanometer noble metal feeding working procedure by selecting nanometer noble metal with the grain diameter between 5 nanometers to 100 nanometers. When a temperature is between 0 DEG C to 50 DEG C, the nanometer noble metal is fed to a stand-by silk fibroin solution and is stirred at a rotating speed of 100-400 round / min to obtain the silk fibroin solution comprising the nanometer noble metal; the concentration of the silk fibroin is 0.5-15w / v percent, and the concentration of the nanometer noble metal is 0.005-0.2w / v percent. The invention can favorably improve the antibiotic performance of the silk fibroin solution so that the silk fibroin can be more widely applied to biological material.

The present invention relates to an acylated chitosan wound dressing, and a preparation method and application thereof. The wound dressing has high moisture absorption and high wet strength, forms into transparent gel after water absorption and swelling, does not adhere to a wound during contact with the wound, and can be conveniently and integrally removed. The wound dressing of the invention is prepared from acylated chitosan fibers containing carboxyl; and the acylated chitosan fiber is an acylated modified chitosan with an acylation degree of substitution of 0.10-0.50 in chitosan structure unit. As the wound treatment dressing, the acylated chitosan has effects of hemostasis and antibiosis and is especially suitable for the treatment of chronic wounds; and the high moisture absorption provides a moist environment for wound healing, and the wound dressing can rapidly absorb exudate and blood on wound surface to promote wound healing.